One of Our Freind was having GST Number Done Purchases from Jul-17 to Mar18 around 80 lakhs , But GST Number has been cancelled by department due to NON-Filling of Return. he has done sales around50 lakhs . What should be next course for him
He has also taken new number in this year on same PAN Number in Jul2018
Please suggest for old Purchase and sales treatment
Thankfull for answer